A piece of a wing, apparently from a Boeing 777, has been found on Reunion, an island the Indian Ocean. It's not clear yet whether the debris from the Malaysia Airlines jet that disappeared from radar during a flight last year. YANNICK PITOU/AFP/Getty Images hide caption

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Customers try out cellphones and tablets in a store in Tehran, in 2012. Financial sanctions make it difficult for U.S. firms to do business in Iran, analysts say. Vahid Salemi/AP hide caption

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Comedian Ari Shaffir performs at the 2015 Bonnaroo Music and Arts Festival in June in Manchester, Tenn. Shaffir has said fellow comedian Carlos Mencia stole his joke about who would build a fence on the U.S.-Mexican border. Copyright on jokes is difficult to prove, and it turned out two other comedians had made similar jokes as well. John Davisson/Invision/AP hide caption

itoggle caption John Davisson/Invision/AP